Native Kotlin and Jetpack Compose development on a consumer-facing Android app for in-store grocery trips, running on a known device inside live stores. Integrates on-device edge AI (ML Kit, TensorFlow Lite) and uses AI coding tools like Cursor or Claude Code. Reports to the Head of Android.

You'll build production Android apps in Kotlin, integrating AI-powered features like LLM chat, vision, and voice through backend APIs while optimizing performance and reliability for mobile devices. BJAK is developing a proactive AI smart assistant for everyday users focused on multi-step workflows, persistent context, and real-world task completion. The role requires 3+ years Android experience with hands-on AI feature integration and strong async programming skills.

You'll build production iOS applications in Swift and SwiftUI for A1, an AI smart assistant handling everyday tasks, conversations, and workflows. The role centers on AI integration through backend APIs, designing UX patterns for streaming responses and AI interactions, optimizing performance and battery efficiency, and collaborating with backend and ML engineers on system reliability. You need 3+ years iOS development experience, proven AI feature integration, async/await expertise, and production app shipping skills.

Deliveroo★3.3 (1.5k)· London

You'll design and build production-grade machine learning systems for Deliveroo's search and recommendations platform using Python, PyTorch or TensorFlow, working with recommendation systems, NLP, ranking algorithms, and generative AI. The New Verticals Personalisation team powers customer discovery across grocery, convenience, and retail delivery categories within DoorDash's three-sided marketplace. You'll provide technical leadership across multiple product areas, mentor junior engineers, and help shape product strategy alongside engineering and product leaders.